Distribution of the assessed mean RV uncertainty as a function of the mean S/N per pixel in the H band (top) and effective temperature (bottom). The symbol color shows the effective temperature of the star (S/N in the bottom plot), while its size is proportional to the projected rotational velocity. The lines in the top plot correspond to Eqs. (1) and (2) (see text). The crosses show the values derived from Reiners & Zechmeister (2020).